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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 | // SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2021 * Köry Maincent, Bootlin, <kory.maincent@bootlin.com> */ #include <alist.h> #include <exports.h> #include <command.h> #include <env.h> #include <extension_board.h> static int cmd_extension_load_overlay_from_env(const struct extension *extension, ulong *filesize) { ulong size, overlay_addr; char *overlay_cmd; int ret; overlay_cmd = env_get("extension_overlay_cmd"); if (!overlay_cmd) { printf("Environment extension_overlay_cmd is missing\n"); return -EINVAL; } overlay_addr = env_get_hex("extension_overlay_addr", 0); if (!overlay_addr) { printf("Environment extension_overlay_addr is missing\n"); return -EINVAL; } env_set("extension_overlay_name", extension->overlay); ret = run_command(overlay_cmd, 0); if (ret) return ret; size = env_get_hex("filesize", 0); if (!size) return -EINVAL; *filesize = size; return 0; } static int cmd_extension_apply(int extension_num) { struct alist *extension_list = extension_get_list(); const struct extension *extension; ulong size; int ret; if (!extension_list) return -ENODEV; extension = alist_get(extension_list, extension_num, struct extension); if (!extension) { printf("Wrong extension number\n"); return -ENODEV; } ret = cmd_extension_load_overlay_from_env(extension, &size); if (ret) return ret; return extension_apply(working_fdt, size); } static int cmd_extension_apply_all(void) { struct alist *extension_list = extension_get_list(); const struct extension *extension; int ret; if (!extension_list) return -ENODEV; alist_for_each(extension, extension_list) { ulong size; ret = cmd_extension_load_overlay_from_env(extension, &size); if (ret) return ret; ret = extension_apply(working_fdt, size); if (ret) return ret; } return 0; } static int do_extension_list(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { struct alist *extension_list; struct extension *extension; int i = 0; extension_list = extension_get_list(); if (!extension_list) { printf("No extension device\n"); return CMD_RET_FAILURE; } if (!alist_get_ptr(extension_list, 0)) { printf("No extension registered - Please run \"extension scan\"\n"); return CMD_RET_SUCCESS; } alist_for_each(extension, extension_list) { printf("Extension %d: %s\n", i++, extension->name); printf("\tManufacturer: \t\t%s\n", extension->owner); printf("\tVersion: \t\t%s\n", extension->version); printf("\tDevicetree overlay: \t%s\n", extension->overlay); printf("\tOther information: \t%s\n", extension->other); } return CMD_RET_SUCCESS; } static int do_extension_scan(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { int extension_num; extension_num = extension_scan(); if (extension_num == -ENODEV) extension_num = 0; else if (extension_num < 0) return CMD_RET_FAILURE; printf("Found %d extension board(s).\n", extension_num); return CMD_RET_SUCCESS; } static int do_extension_apply(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { int extension_id; if (argc < 2) return CMD_RET_USAGE; if (!working_fdt) { printf("No FDT memory address configured. Please configure\n" "the FDT address via \"fdt addr <address>\" command.\n"); return -EINVAL; } if (strcmp(argv[1], "all") == 0) { if (cmd_extension_apply_all()) return CMD_RET_FAILURE; } else { extension_id = simple_strtol(argv[1], NULL, 10); if (cmd_extension_apply(extension_id)) return CMD_RET_FAILURE; } return CMD_RET_SUCCESS; } static struct cmd_tbl cmd_extension[] = { U_BOOT_CMD_MKENT(scan, 1, 1, do_extension_scan, "", ""), U_BOOT_CMD_MKENT(list, 1, 0, do_extension_list, "", ""), U_BOOT_CMD_MKENT(apply, 2, 0, do_extension_apply, "", ""), }; static int do_extensionops(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { struct cmd_tbl *cp; /* Drop the extension command */ argc--; argv++; cp = find_cmd_tbl(argv[0], cmd_extension, ARRAY_SIZE(cmd_extension)); if (cp) return cp->cmd(cmdtp, flag, argc, argv); return CMD_RET_USAGE; } U_BOOT_CMD(extension, 3, 1, do_extensionops, "Extension board management sub system", "scan - scan plugged extension(s) board(s)\n" "extension list - lists available extension(s) board(s)\n" "extension apply <extension number|all> - applies DT overlays corresponding to extension boards\n" ); |